Automobile ignition failure occurs in damp weather. Explain, why?

cbse
electricfield

#1

The insulating porcelain of the spark plugs accumulates a film of dirt. The surface dirt is hygroscopic and picks up moisture from the air. Therefore, in humid weather, the insulating porcelain of the plugs becomes quasi-conductor. This allows an appreciable proportion of the Spark to leak across the surface of the plug instead of discharging across the gap.